Incident Overview
A Cessna aircraft, while being prepared for a flight, veered in a semi-circle during a manual speed governor check on the left engine. The aircraft subsequently collided with another aircraft that was parked. Both occupants escaped uninjured.
Sequence of Events
During the ground operation, the aircraft unexpectedly departed from its intended path. The pilot attempted to apply brakes, but they were delayed in their response. The aircraft then struck a stationary aircraft, resulting in a fire.
Investigation Findings
Examination of the start lock assemblies could not be completed due to extensive impact and fire damage sustained in the collision. The fire that followed the collision further hampered the investigation. The official probable cause for the initial veering is listed as undetermined. For the collision phase, the findings note that the brakes were normal but their application was delayed by the pilot. The object struck was a parked/standing aircraft.
Conclusion
The reason for the Cessna veering and colliding with the parked aircraft remains undetermined. The investigation was limited by the damage from the impact and subsequent fire.